Neutron scattering study of the layered Ising magnet CsDy(MoO₄)₂

• Veröffentlicht in: Физика низких температур
• Datum: 2004
• Hauptverfasser: Khatsko, E.N., Zheludev, A., Tranquada, J.M., Klooster, W.T., Knigavko, A.M., Srivastava, R.C.
• Format: Artikel
• Sprache: English
• Veröffentlicht: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2004
• Schlagworte: Низкотемпеpатуpный магнетизм
• Online Zugang: https://nasplib.isofts.kiev.ua/handle/123456789/119444
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Zitieren: Neutron scattering study of the layered Ising magnet CsDy(MoO₄)₂ / E.N. Khatsko, A. Zheludev, J.M. Tranquada, W.T. Klooster, A.M. Knigavko, R.C. Srivastava // Физика низких температур. — 2004. — Т. 30, № 2. — С. 184-192. — Бібліогр.: 31 назв. — англ.

The quasi-two-dimensional antiferromagnet CsDy(MoO₄)₂ is studied by neutron diffraction and quasielastic neutron scattering. The crystal structure of two low-temperature phases (below 120 K and below 40 K) is determined. An approximate structure of the magnetically ordered phase (TN = 1.36 K) is proposed. In the ordered state the order-parameter critical exponent β = 0.17(0.01), the in-plane correlation length exponent ν = 0.94(0.07), and the staggered susceptibility critical index γ= 1.01(0.04) were determined. Comparing these results to the exact solution for a 2D Ising magnet we conclude that, although 2D behavior is apparent in CsDy(MoO₄)₂, there are deviations from the simple 2D Ising model.